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Pygame代码 制作一个贪吃蛇小游戏

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

用到的 Pygame 函数

贪吃蛇小游戏用到的函数

 

功能描述
init()初始化 pygame
display.set_mode()以元组或列表为参数创建窗口
update()更新屏幕
quit()用于取消初始化的 pygame
set_caption()在屏幕的顶部设置文字
event.get()返回所有事件的列表
Surface.fill()使用纯色填充屏幕
time.Clock()追踪时间
font.Font()设置字体

创建屏幕

我们使用函数 display.set_mode()  来创建 pygame 窗口，同时我们还要在程序的开始和结尾处进行 init()  和 quit()  函数，以保证程序可以正确开始和结束。

import pygame
pygame.init()
dis=pygame.display.set_mode((400,300))
pygame.display.update()
pygame.quit()
quit()

这要我们运行程序，就可以得到如下：

但是这要的代码，我们的程序创建只会一闪而过，下面我们增加一些代码，来保持住程序窗口

import pygame
pygame.init()
dis=pygame.display.set_mode((400,300))
pygame.display.update()
pygame.display.set_caption('Snake game by Edureka')
game_over=False
while not game_over:
    for event in pygame.event.get():
        print(event)   # 打印出所有事件

pygame.quit()
quit()

我们增加了游戏窗口的名称，同时还可以在 Python 控制台中看到我们在 pygame 窗口上操作时的所有事件

下面我们来增加关闭响应事件

pygame.init()
dis = pygame.display.set_mode((400, 300))
pygame.display.update()
pygame.display.set_caption('贪吃蛇')
game_over = False
while not game_over:
    for event in pygame.event.get():
        if event.type==pygame.QUIT:
            game_over=True

pygame.quit()
quit()

至此我们的游戏窗口就设置好了，下面就可以来画 snake 了

创建 snake

我们首先创建一些颜色变量，用来表示 snake，food，screen 等

pygame.init()
dis = pygame.display.set_mode((400, 300))
pygame.display.update()
pygame.display.set_caption('贪吃蛇')

blue=(0,0,255)
red=(255,0,0)

game_over = False
while not game_over:
    for event in pygame.event.get():
        if event.type==pygame.QUIT:
            game_over=True

    pygame.draw.rect(dis, blue, [200, 150, 10, 10])
    pygame.display.update()

pygame.quit()
quit()

这样，一只（条）贪吃蛇就创建完成了，就是那个小蓝点儿

使 snake 动起来

为了实现 snake 的移动，我们需要用到的关键事件是 KEYDOWN，它包含四个 key 值，K_UP, K_DOWN, K_LEFT, 和 K_RIGHT，分别表示向上、向下、向左和向右

pygame.init()
pygame.display.set_caption('贪吃蛇')
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)

dis = pygame.display.set_mode((800, 600))

game_over = False

x1 = 300
y1 = 300

x1_change = 0
y1_change = 0

clock = pygame.time.Clock()

while not game_over:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                x1_change = -10
                y1_change = 0
            elif event.key == pygame.K_RIGHT:
                x1_change = 10
                y1_change = 0
            elif event.key == pygame.K_UP:
                y1_change = -10
                x1_change = 0
            elif event.key == pygame.K_DOWN:
                y1_change = 10
                x1_change = 0

    x1 += x1_change
    y1 += y1_change
    dis.fill(white)
    pygame.draw.rect(dis, black, [x1, y1, 10, 10])

    pygame.display.update()

    clock.tick(30)

pygame.quit()
quit()

我这里创建了 x1_change 和 y1_change 变量来更新 x 和 y 坐标，使得我们的 snake 可以移动起来

处理 Game Over

对于贪吃蛇游戏来说，如果 snake 移动出了游戏屏幕，那么游戏就已经失败了，下面我们就来处理这部分逻辑

import pygame
import time

pygame.init()
pygame.display.set_caption('贪吃蛇')
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)

dis_width = 600
dis_height = 400
dis = pygame.display.set_mode((dis_width, dis_width))

game_over = False

x1 = dis_width / 2
y1 = dis_height / 2

snake_block = 10

x1_change = 0
y1_change = 0

clock = pygame.time.Clock()
snake_speed = 30

font_style = pygame.font.Font("C:/Windows/Fonts/STFANGSO.TTF", 20)


def message(msg, color):
    mesg = font_style.render(msg, True, color)
    dis.blit(mesg, [dis_width / 2, dis_height / 2])


while not game_over:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                x1_change = -snake_block
                y1_change = 0
            elif event.key == pygame.K_RIGHT:
                x1_change = snake_block
                y1_change = 0
            elif event.key == pygame.K_UP:
                y1_change = -snake_block
                x1_change = 0
            elif event.key == pygame.K_DOWN:
                y1_change = snake_block
                x1_change = 0

    if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
        game_over = True

    x1 += x1_change
    y1 += y1_change
    dis.fill(white)
    pygame.draw.rect(dis, black, [x1, y1, snake_block, snake_block])

    pygame.display.update()

    clock.tick(snake_speed)

message("你失败了，请重新开始游戏！", red)
pygame.display.update()
time.sleep(2)

pygame.quit()
quit()

增加食物

既然是贪吃蛇，当然要投食了，下面我们就来处理食物

import pygame
import time
import random

pygame.init()
pygame.display.set_caption('贪吃蛇')

white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
blue = (0, 0, 255)

dis_width = 800
dis_height = 600

dis = pygame.display.set_mode((dis_width, dis_height))

clock = pygame.time.Clock()

snake_block = 10
snake_speed = 30

font_style = pygame.font.Font("C:/Windows/Fonts/STFANGSO.TTF", 20)


def message(msg, color):
    mesg = font_style.render(msg, True, color)
    dis.blit(mesg, [dis_width / 3, dis_height / 3])


def gameLoop():  # creating a function
    game_over = False
    game_close = False

    x1 = dis_width / 2
    y1 = dis_height / 2

    x1_change = 0
    y1_change = 0

    foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0

    while not game_over:

        while game_close == True:
            dis.fill(white)
            message("你失败了，请重新开始游戏！", red)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        gameLoop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0

        if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
            game_close = True

        x1 += x1_change
        y1 += y1_change
        dis.fill(white)
        pygame.draw.rect(dis, blue, [foodx, foody, snake_block, snake_block])
        pygame.draw.rect(dis, black, [x1, y1, snake_block, snake_block])
        pygame.display.update()

        if x1 == foodx and y1 == foody:
            print("Good!")
        clock.tick(snake_speed)

    pygame.quit()
    quit()

gameLoop()

我这里创建了一个函数 gameLoop 作为我们的主函数，同时还初始化了 snake 的食物，还同时增加了键盘 c 和 q 关键字，来重新开始游戏和退出游戏

snake 的成长

下面我们就开始在 snake 吃掉食物之后，增加 snake 的长度，这也是游戏的基本规则

import pygame
import time
import random

pygame.init()
pygame.display.set_caption('贪吃蛇')
font_style = pygame.font.Font("C:/Windows/Fonts/STFANGSO.TTF", 20)
score_font = pygame.font.Font("C:/Windows/Fonts/STCAIYUN.TTF", 30)

white = (255, 255, 255)
yellow = (255, 255, 102)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)
blue = (50, 153, 213)

dis_width = 600
dis_height = 400

dis = pygame.display.set_mode((dis_width, dis_height))

clock = pygame.time.Clock()

snake_block = 10
snake_speed = 15


def our_snake(snake_block, snake_list):
    for x in snake_list:
        pygame.draw.rect(dis, black, [x[0], x[1], snake_block, snake_block])


def message(msg, color):
    mesg = font_style.render(msg, True, color)
    dis.blit(mesg, [dis_width / 6, dis_height / 3])


def gameLoop():
    game_over = False
    game_close = False

    x1 = dis_width / 2
    y1 = dis_height / 2

    x1_change = 0
    y1_change = 0

    snake_List = []
    Length_of_snake = 1

    foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0

    while not game_over:

        while game_close == True:
            dis.fill(blue)
            message("你失败了，请重新开始游戏！", red)

            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        gameLoop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0

        if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
            game_close = True
        x1 += x1_change
        y1 += y1_change
        dis.fill(blue)
        pygame.draw.rect(dis, green, [foodx, foody, snake_block, snake_block])
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Length_of_snake:
            del snake_List[0]

        for x in snake_List[:-1]:
            if x == snake_Head:
                game_close = True

        our_snake(snake_block, snake_List)

        pygame.display.update()

        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
            Length_of_snake += 1

        clock.tick(snake_speed)

    pygame.quit()
    quit()
    gameLoop()

展示得分

最后我们来显示得分，毕竟对于游戏来说，玩家的得分还是很重要的

import pygame
import time
import random

pygame.init()
pygame.display.set_caption('贪吃蛇')
font_style = pygame.font.Font("C:/Windows/Fonts/STFANGSO.TTF", 20)
score_font = pygame.font.Font("C:/Windows/Fonts/STCAIYUN.TTF", 30)

white = (255, 255, 255)
yellow = (255, 255, 102)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)
blue = (50, 153, 213)

dis_width = 600
dis_height = 400

dis = pygame.display.set_mode((dis_width, dis_height))

clock = pygame.time.Clock()

snake_block = 10
snake_speed = 15


def Your_score(score):
    value = score_font.render("Your Score: " + str(score), True, yellow)
    dis.blit(value, [0, 0])


def our_snake(snake_block, snake_list):
    for x in snake_list:
        pygame.draw.rect(dis, black, [x[0], x[1], snake_block, snake_block])


def message(msg, color):
    mesg = font_style.render(msg, True, color)
    dis.blit(mesg, [dis_width / 6, dis_height / 3])


def gameLoop():
    game_over = False
    game_close = False

    x1 = dis_width / 2
    y1 = dis_height / 2

    x1_change = 0
    y1_change = 0

    snake_List = []
    Length_of_snake = 1

    foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0

    while not game_over:

        while game_close == True:
            dis.fill(blue)
            message("你失败了，请重新开始游戏！", red)
            Your_score(Length_of_snake - 1)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        gameLoop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0

        if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
            game_close = True
        x1 += x1_change
        y1 += y1_change
        dis.fill(blue)
        pygame.draw.rect(dis, green, [foodx, foody, snake_block, snake_block])
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Length_of_snake:
            del snake_List[0]

        for x in snake_List[:-1]:
            if x == snake_Head:
                game_close = True

        our_snake(snake_block, snake_List)
        Your_score(Length_of_snake - 1)

        pygame.display.update()

        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
            Length_of_snake += 1

        clock.tick(snake_speed)

    pygame.quit()
    quit()


gameLoop()

这里创建了一个 Your_score 函数来记录玩家得分

这样，我们就完成了一个简易的贪吃蛇小游戏了

最后的最后，我们再给游戏添加音乐背景，让游戏的时光更加惬意吧

# 播放音乐
pygame.init()
pygame.mixer.music.load(r"Game.mp3")
pygame.mixer.music.play()

到此这篇关于100行Pygame代码 制作一个贪吃蛇小游戏的文章就介绍到这了,更多相关Pygame制作一个贪吃蛇小游戏内容请搜索极客世界以前的文章或继续浏览下面的相关文章希望大家以后多多支持极客世界！

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